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How to change Navigation Bar color in iOS 7?
... Guide
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
// iOS 6.1 or earlier
self.navigationController.navigationBar.tintColor = [UIColor redColor];
} else {
// iOS 7.0 or later
self.navigationController.navigationBar.barTintCo...
Iterate a list as pair (current, next) in Python
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Since the_list[1:] actually creates a copy of the whole list (excluding its first element), and zip() creates a list of tuples immediately when called, in total three copies of your list are created. If your list is very large, you ...
What is Prefix.pch file in Xcode?
...ngs (Command-Option-E, build tab) and uncheck Precompile Prefix Header (GCC_PRECOMPILE_PREFIX_HEADER). You can also remove the value of the Prefix Header setting if you wish.
Also note that,
Don't put macros in a.pch file! A .pch file is, by definition, a project specific precompiled header. It re...
Right way to initialize an OrderedDict using its constructor such that it retains order of initial d
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See __hash__. Specifically about the str type.
– metatoaster
Aug 25 '14 at 6:43
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How do I log errors and warnings into a file?
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Use the following code:
ini_set("log_errors", 1);
ini_set("error_log", "/tmp/php-error.log");
error_log( "Hello, errors!" );
Then watch the file:
tail -f /tmp/php-error.log
Or update php.ini as described in this blog entry from 2008.
...
Cost of len() function
...s, not C terms]: look up "len" in a dictionary and dispatch it to the built_in len function which will look up the object's __len__ method and call that ... all it has to do is return self.length
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“No such file or directory” error when executing a binary
I was installing a binary Linux application on Ubuntu 9.10 x86_64. The app shipped with an old version of gzip (1.2.4), that was compiled for a much older kernel:
...
What is the single most influential book every programmer should read? [closed]
... For Computer Scientists http://ecx.images-amazon.com/images/I/51HCJ5R42KL._SL500_BO2,204,203,200_AA219_PIsitb-sticker-dp-arrow,TopRight,-24,-23_SH20_OU02_.jpg
Discrete Mathematics For Computer Scientists by J.K. Truss.
While this doesn't teach you programming, it teaches you fundamental mathemati...
How to convert a string or integer to binary in Ruby?
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You have Integer#to_s(base) and String#to_i(base) available to you.
Integer#to_s(base) converts a decimal number to a string representing the number in the base specified:
9.to_s(2) #=> "1001"
while the reverse is obtained with String#to...
How to Apply Gradient to background view of iOS Swift App
...rray <AnyObject> = [colorTop, colorBottom]
– JP_
Sep 9 '14 at 6:46
7
for swift 1.0 the synt...